Improvement in hay and cotton presses



L. D. FINDLAY & D. B.'CRA|G.

Hay and Sutton Pres-ses.

Patented A prl28, 1874.

" UNITED STATES.

rPATENT (DEI'IICE.

CHRISTOPHER D. rINDLAYAIID DAVID D. CRAIG, OE MACON, GEORGIA.

IMPRovEMENT IN'HA-v AND coTToN PREssEs.

Sp eclilcation forming part of Letters Patent No. 150,313, dated April28, 187A; application filed March 16, 1,874. g

To all whom 'it may concern.-

Be it known that we, CHRISTOPHER D. FINDLAY and DAVID D. CRAIG, ofMacon, in the county of Bibb. and State of Georgia, have Invented a newand Improved Press for Hay, Cotton, Src.; and we do hereby declare thatthe following is a full, clear, and exact descriptionof the same,reference being had to the accompanying drawing, forming a part 'Ot'thls specification, in which- Figure 1 is a side elevation, partlybroken away; Fig'. 2, a vertical section Fig. 3, a plan View 5- Fig. 4,a detail side view of ring.

The invention relates to hay, cotton, or

other presses, but is intended more particularly as animprovement uponthe press" for which Letters Patent were granted to us February 21,1871. -The invention will iirst be fully-described, 1 11 connection withall thatL is necessaryto a iull understanding thereof, and then pointedout in the claim. l

A represents the follower screw, yhaving,

rounded spiral groove or thread, and attached to a plate, B,to theopposite side Ot' which the follower. is rigidly connected. C is arotary nut, placed within a plain fixed tube,'B, and having smallrecesses, c, in which arelballs a, (made of any suitable material,) andarranged in a spiral order to correspond withV thread of screw A. Thisis employed instead of the spirally slotted and grooved circumjaeenttube y of our former patent, thenut C being thus thickened andstrengthened, while the frictional contact-is lessened, and theresist-ance greatly diminished.. The tube or nut C has a ange, C', `atits lowerend, and in the upper face of this ilange a concavity whosebottom is inclined upwardly from the circumference to the nut C. Abovethis flange, and between it and the flange b' of tube B', is locatedavnut Cwill thus avoid the unequal pressure upon the perinreters of ourformer rollers, induce a more perfect uniformity thereof, and

ythus decrease the frictional resistance to the rotation ot' the nut. His a Wrench or lever head, having a median recess to fit over theangular neck of nut C, and thus enable it to be rotated. it cannot riseby pins F F, that pass through holes h, and into grooves c2 of saidneck. .Having thus described our invention, what we claim is- Thev nutC, having a series of recesses, c,

formed in its inner surface, and provided at its lower end with aflange, C', having its upper surface inclined upwardly from near thecircumference to the nut, in combination with a serie-s of balls, a,screw A, conical rollers E, and hanged tube B', all constructedsubstantially as and for the purpose specified. D

CHRISTOPHER D. FINDLAY. DAVID, D. CRAIG. Witnesses to FINDLAY: l, `W. C.GOODALI.,

H. T. POWELL. Witnesses to CRAIG:

SOLON C. KEMON, EDWARD VV. BENTON.

This head H is fastened so thatv

